Oklahoma State will open Big 12 play in primetime.
The Cowboys' game at Texas will kick off at 6:30 p.m. Sept. 21, televised by ABC, the conference announced Monday.
OSU (2-0) has won four straight games over Texas and five straight in Austin.
The Cowboys are coming off a 56-14 rout of FCS-level McNeese State, while Texas (1-1) lost at home, 45-38 to LSU.
Gleeson has plenty to critique after blowout win
The end result was ideal for Oklahoma State offensive coordinator Sean Gleeson.
A 56-14 blowout of McNeese State on Saturday night kept his players feeling good about themselves, but there were enough mistakes, particularly in the lackluster first quarter, to give Gleeson a long list of improvements to work on in practice this week.